Cribbing



0a. 25, 1932. G. w. #owns CRIBBING Filed Ag. 25. 1950 Mum...

. Y A l I/zvx/ENTOR A TTORNE Y/.S

Patented' 10st.. 2.5, i932 GEORGE W. POWERS, OF CLEVELAND, GEIQCRIBBINla Application led .August 23, 1930. :SerialH Re. 477,114?.

rllhis invention relates tothe art of cribhing; the general object ofthe invention is to 'devise an improved form of cribbing structureembodying metal stretcher and header `members which may be convenientlyformed and connected together for ready assembly or disassembly. i

More specifically, the object here is to devise such a structure inwhich the stretcher and header members are connected ltogether by meansof interengaging tongues or cleats and registering openings to receivethe same'.

rlhe stretcher and headermembers `are vformed of ,galvanised orrust-proof metal and in the present case, the stretcher and headermembers are formed up from sheet fmetal into hollow rectangular form.

@ther objects will appear from the following description and claims whenconsidered together with the accompanying drawing.

Fig. l is a perspective view of the overlapping portions of thestretcher and header members in which there is employed one particularterm` of connecting means therebetween; Fig. '2 is a perspective view ofthe same corresponding portions of the stretcher and header memberswhich are secured together by a. modified form 'of connecting means;Fig. 3 is a cross-sectional view of the term illustrated in Fig. 2; Fig.4 is a perspective view ot a portion of one of the header membersillust-rated in Fig. 2; and Fig. 5 illustrates diagrammatically thegeneral assembly of the stretcher and header members.

Referring lirst to Fig. l, the two opposite vertical sides of thehollow, sheet metal header members 1 are provided near the ends thereofwith the cleats 2' which are welded thereto so that their top and bottomend portions extend beyond the header members. The projecting endportions of the cleats 2 are adapted to be received by the correspondingslots 3 formed in the top and bottom sides of the stretcher members 9.Some of the stretcher members may have their adjacent abutting endsarranged in staggered relation with respect to theoverlapping endportion of the header member, and the slots 3 will be formed in the endor middle portions of the stretcher members 9 accordingly. The open endsol the hollow stretcher and header members may be reinforced and closedby means of the inserts 4l which may consist of any suitable materialsuch as concrete or metal for the purpose of better snpporting thecompressive load and preventing the entrance of the natural elements. le end portions of the header members may also be reinforced and providedwith rectangular caps to enclose such end portions and thc cleats 2 maybe welded to the sides of the caps.

In the modification illustrated in Fig. 2, the hollow stretcher members5 which are formed entirely of rust-prooi sheet metal may have theirinner side portions formed with the flanges 5a and 5" in which areprovided the slots 5c. These slots are adapted to receive the tangsGwhich are struck up integrally from the header member 7. These tangs,when extended through the slots, are i then turned down so as to securethe same in interlocking engagement. ln this :form of structure, some ofthe stretcher members 5 may be arranged with their abutting ends instaggered relation with respect to the overlapping end portion of theheader member.. In such case. one of the tanga (l will entend through aslotk in one ot the stretcher members while the other tang 6 will extendthrough a slot-in the abutting end portion in the other stretchermember. ln this case also the end portion of the header member may beprovided with a cap e to be placed over the end thereof after the inserthas been placed in positionl H so desired, the cap 8 may be providedwith the tangs for engagement in the slots ot the stretcher members.

In all of the several forms herein illustrated, the metal members areirst formed completely and are then galvanized.

In either of the forms of structure herein disclosed, there may beemployed also the l in my co-epending application Serial No.

477,445, filed Aligust 23rd, 1930.

With the present form of structure, the stretcher and header members maybe conveniently formed and will be substantiallyv proof against rust.Also, they may be conveniently connected together at their overlappingportions, either temporarily or perm manentl and such a structure iscalculated to have onger life than my forms used heretofore. Thiscribbin g structure can be manufactured and installed at reasonable costand it ossesses a high degree of eciency.

hat I claim is:

1. A cribbing structure comprising hollow tubular stretcher and headermembers, having metallic walls, said members having fiat load-v bearingwalls extending in parallelism and verticalside walls in parallel spacedrelationship, ton ues struck up from the metal of the flat loadaringwalls of the header members, slots in the load bearing walls of thestretcher members, re 'svtering with said tongues, the structure beingassembled. with the tongues passing through the slots and bent down uponthe stretcher member to retain it in lace.

2. A cribbing structure comprising tu ular stretcher and header members,said members having flat load-bearing walls extendin in parallelism, thestructure being assem led with the load bearing walls in superimposedload-bearing relationship, reinforcing means K within the tubularmembers in the load-bearing position and contacting the load-bearingwalls to carry part of the vertical compressive load, and securingtongues attached to one member and extending interiorly of the acljacentmember, said securing tongues serving also to retain the reinforcingmeans in place.

3. A cribbing structure comprising hollow tubular stretcher and. headermembers having metallic walls, said members having overlapping portions,and at tongues welded to 1 the outside of the vertical walls of theheader members and projecting above and below said header members andengaging within registering openings provided in the overlappingportions of the stretcher members.

In witness whereof, I hereby affix my si gnature.

GEORGE W. POWERS.

